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Theory of Machine

Theory of Machine
Elements of pairs held together mechanically is known as

Open pair
Mechanical pair
Rolling pair
Closed pair

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Theory of Machine
Bifilar suspension method is used to find the

Angular acceleration of the body
Periodic time of the body
Moment of inertia of the body
Frequency of vibration of the body

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Theory of Machine
The equation of free vibrations of a system is (d²x/dt²) +36 π²x, its natural frequency is

3π Hz
6 Hz
6π Hz
3 Hz

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Theory of Machine
When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.

Forward
Backward
Downward
Upward

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Theory of Machine
If ‘D₁’ and ‘D₂’ be the diameters of driver and driven pulleys, then belt speed is proportional to

D₁/D₂
D₂/D₁
D₁
D₁.D₂

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Theory of Machine
In which of the following type of gear train the first gear and the last gear are co-axial.

None of the listed here
Compound gear train
Simple gear train
Reverted gear train

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